Machine for cutting envelop-bands.



No. -799,990. PATENTED SEPT. 19,1905. E.A.0LAUS.

MACHINE FOR CUTTING ENVELOP BANDS. APPLICATION FILED AUG.18, 1904.

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PATENTED SEPT. 19, 1905.'

E. A. GLAUS. MACHINE FOR CUTTING BNVBLOP BANDS APPLICATION-FILED AUG. 18, 1904.

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a 4% 4. lfll UNITED STATES PATENT OFFICE.

EMI L A. CLAUS, OF HARTFORD, CONNECTICUT.

MACHINE FUR CUTTING ENVELOP -B ANDS.

Specification of Letters Patent.

Patented Sept. 19, 1935.

A li atio fil d August 18, 1904. Serial No. 221,303.

To all whom it may concern:

Be it known that I, EMIL A. CLAUs, a citizen of the United States, and a resident of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Machines for Cutting Envelop-Bands, of which the following is a full, clear, and exact specification.

This invention relates to paper-cutting machines, and more especially to that class thereof in which the paper-stock to be cut is intermittently fed to the knives in an automatic manner; and it has for one of its objects the provision of a machine of this character in which the feed may be varied so as to cut strips of varying widths, as required.

My invention has, furthermore, for its object the improved means for guiding the movable knife of the machine relatively to the stationary knife, so that a close cooperation of the knife-edges may be maintained no matter how much the movable knife wears in the guides.

My invention has, furthermore, for its object the improved organization and construction of the machine elements, as will be hereinafter described, and particularly pointed out in the claim.

In the accompanying drawings, in which similar figures denote similar parts, Figure 1 represents a front view of my improved machine. Fig. 2 is an end view thereof looking to the right of Fig. 1. Fig. 3 is a vertical section on line 3 3 of Fig. 1. Fig. 1illus trates in perspective a number of tubes which are to be cut up into bands, and Fig. 5 is a similar view of a band as it is cut by the machine.

The primary object of the present invention of an automatic machine for cutting the bands which are usually strapped around envelops, of which twenty-five usually form a bunch. Practice has demonstrated .that the old method of pasting the ends of the band after it has been strappedaronnd the bunchis apt not only to leave some paste on the outer envelop, but, furthermore, there is no assurance of uniformity in the thickness of the several bunches, some of which may be strapped more tightly than others. Hence I deem it advantageous to make paper tubes of standard size, these tubes to be cut laterally into bands of uniform width, and in the present instance a number of such tubes (see Fig. 4) may be fed into the machine at the same time, thereby increasing the output considerably. My improved machine for cutting the tubes into uniform bands is shownin the drawings, in which- 1O denote a pair of side frames which are united at their bases by a tie 11 and which have at their upper ends bearings 12 12 to receive a shaft 13, carrying a fly-wheel 14:, and tight and loose pulleys 15 16, respectively. Secured to the rear of the tie 11 is a stationary knife 17, and cooperative with the latter is a movable knife 18, the cutting edge of which is inclined relatively to that of the stationary knife, (see Fig. 1,) so as to produce a mentand is provided near its ends with shackles 19, connected by-pitman-rods with alined cranks 21 of the shaft 13. The end extensions of the knife 18 enter and move in slots 22 of the uprights 10, and the knife is thus guided relatively to the stationary knife 17, and inasmuch as it is evident that when the machine is in operation the paper-stock tends to crowd the knives apart, or, in other words, to force the movable knife forward, it follows that the front surface of knife ends playing in the slots 22 will, as a matter of course, be subjected to considerable wear. For this reason I have provided wearingstrips 23 in the slots 22 and adj usting-screws 23 in screw-threaded engagement with cappieces 2 1, which close the slots and form the front walls thereof, while they are removably secured to the frames 10, respectively-as, for instance, by bolts 25-and therefore permit the knife 18 to be readily removed from the machine for grinding without in any way disarranging the rest of the machine.

Disposed immediately in the rear of the knife 17 is the mechanism for feeding the paper tubes, this mechanism comprising a feedroller 30, journaled in bearings 31 of the side frames 10, and a friction-roller 33, journaled in bearings 34:, which are vertically movable in slots 32 of the side frames, suitable springs 35 being provided for forcing the roller 33 toward the roller 30 and to permit the introduction of diiferent numbers of tubes to be cut, the latter being placed on a feed-board 36, supported on the frames 10 and carrying a guide-plate 37 for leading the front end of the tubes between the rollers 30 33.

Means are provided for intermittently rotating the feed-roller 30 during the upward movement of the knife 18, and by referring to Fig. 1 it will be seen that the roller 30 has secured thereto a ratchet-Wheel 40, the teeth of which are engaged by a pawl 41, pivoted on. an arm 42, which is loosely supported on the shaft of said roller 30 and may be held in place thereon by a nut 43. Oscillatory movethe axis of the shaft 13 to vary the angular oscillation of the arm 43.

in order to enable unskilled help to make the necessary adjustment of the machine for cutting bands of certain widths, properlynumbered index-marks 50 are disposed at the side of the radial slot 47, so that the feed may be accurately set and reset without difiiculty, the machine being shown as set for cutting bands one inch in width.

The actuating-pawl 4:1 is held in engagement With the ratchet-wheel 40 by a spring 51, and a spring-dog 52 may be employed for preventing backward rotation of the feedrollers during the return movement of the arm 42. V

Having thus described my invention, what I claim is In combination, suitable side frames having slots, a stationary blade arranged between the frame, a movable blade having extensions arranged Within the slots of the frames, caps for the slots to make guideways for the movable blades, means for reciprocating the blades Wear-strips interposed between the caps and slots and the extensions of the movable blade, screws passing through the caps and bearing against the wear-strips for adjusting the movable blade with relation to the stationary blade, a feeding means for the blades held by the frames, and operated by the movableblade-operating means, a feed-table adjacent the feeding means, and a guide-plate arranged over the table for thefeeding means.

JMIL A. CLAUS.

Witnesses:

B. L. WALKER, CHAS. F. SOHMELZ. 

